php是如何判定手机、电脑访问自动跳转头文件的

我们经常会遇到用手机和电脑打开网站的时候，发现打开的页面是不同的，那么这种方法是怎么做到的呢？我们用php代码教给大家。

<script>ec(2);</script>

php判定手机电脑访问自动跳转头文件代码如下：

<?php  
function is_mobile_request()  
{  
 $_SERVER[&#39;ALL_HTTP&#39;] = isset($_SERVER[&#39;ALL_HTTP&#39;]) ? $_SERVER[&#39;ALL_HTTP&#39;] : &#39;&#39;;  
 $mobile_browser = &#39;0&#39;;  
 if(preg_match(&#39;/(up.browser|up.link|mmp|symbian|smartphone|midp|wap|phone|iphone|ipad|ipod|android|xoom)/i&#39;, strtolower($_SERVER[&#39;HTTP_USER_AGENT&#39;])))  
  $mobile_browser++;  
 if((isset($_SERVER[&#39;HTTP_ACCEPT&#39;])) and (strpos(strtolower($_SERVER[&#39;HTTP_ACCEPT&#39;]),&#39;application/vnd.wap.xhtml+xml&#39;) !== false))  
  $mobile_browser++;  
 if(isset($_SERVER[&#39;HTTP_X_WAP_PROFILE&#39;]))  
  $mobile_browser++;  
 if(isset($_SERVER[&#39;HTTP_PROFILE&#39;]))  
  $mobile_browser++;  
 $mobile_ua = strtolower(substr($_SERVER[&#39;HTTP_USER_AGENT&#39;],0,4));  
 $mobile_agents = array(  
    &#39;w3c &#39;,&#39;acs-&#39;,&#39;alav&#39;,&#39;alca&#39;,&#39;amoi&#39;,&#39;audi&#39;,&#39;avan&#39;,&#39;benq&#39;,&#39;bird&#39;,&#39;blac&#39;,  
    &#39;blaz&#39;,&#39;brew&#39;,&#39;cell&#39;,&#39;cldc&#39;,&#39;cmd-&#39;,&#39;dang&#39;,&#39;doco&#39;,&#39;eric&#39;,&#39;hipt&#39;,&#39;inno&#39;,  
    &#39;ipaq&#39;,&#39;java&#39;,&#39;jigs&#39;,&#39;kddi&#39;,&#39;keji&#39;,&#39;leno&#39;,&#39;lg-c&#39;,&#39;lg-d&#39;,&#39;lg-g&#39;,&#39;lge-&#39;,  
    &#39;maui&#39;,&#39;maxo&#39;,&#39;midp&#39;,&#39;mits&#39;,&#39;mmef&#39;,&#39;mobi&#39;,&#39;mot-&#39;,&#39;moto&#39;,&#39;mwbp&#39;,&#39;nec-&#39;,  
    &#39;newt&#39;,&#39;noki&#39;,&#39;oper&#39;,&#39;palm&#39;,&#39;pana&#39;,&#39;pant&#39;,&#39;phil&#39;,&#39;play&#39;,&#39;port&#39;,&#39;prox&#39;,  
    &#39;qwap&#39;,&#39;sage&#39;,&#39;sams&#39;,&#39;sany&#39;,&#39;sch-&#39;,&#39;sec-&#39;,&#39;send&#39;,&#39;seri&#39;,&#39;sgh-&#39;,&#39;shar&#39;,  
    &#39;sie-&#39;,&#39;siem&#39;,&#39;smal&#39;,&#39;smar&#39;,&#39;sony&#39;,&#39;sph-&#39;,&#39;symb&#39;,&#39;t-mo&#39;,&#39;teli&#39;,&#39;tim-&#39;,  
    &#39;tosh&#39;,&#39;tsm-&#39;,&#39;upg1&#39;,&#39;upsi&#39;,&#39;vk-v&#39;,&#39;voda&#39;,&#39;wap-&#39;,&#39;wapa&#39;,&#39;wapi&#39;,&#39;wapp&#39;,  
    &#39;wapr&#39;,&#39;webc&#39;,&#39;winw&#39;,&#39;winw&#39;,&#39;xda&#39;,&#39;xda-&#39;
    );  
 if(in_array($mobile_ua, $mobile_agents))  
  $mobile_browser++;  
 if(strpos(strtolower($_SERVER[&#39;ALL_HTTP&#39;]), &#39;operamini&#39;) !== false)  
  $mobile_browser++;  
 // Pre-final check to reset everything if the user is on Windows  
 if(strpos(strtolower($_SERVER[&#39;HTTP_USER_AGENT&#39;]), &#39;windows&#39;) !== false)  
  $mobile_browser=0;  
 // But WP7 is also Windows, with a slightly different characteristic  
 if(strpos(strtolower($_SERVER[&#39;HTTP_USER_AGENT&#39;]), &#39;windows phone&#39;) !== false)  
  $mobile_browser++;  
 if($mobile_browser>0)  
  return true;  
 else
  return false;
}
    
if(is_mobile_request()){ 
header("location:app/index.html");
exit();
}
else{ 
header("location:index/index.html");
exit(); 
}
?>

以上就是php判定手机电脑访问自动跳转头文件的代码，有需要的小伙伴们，可以根据实际需要修改即可。